before we go, we wanted to show you a live picture a flag at half-staff along the embarcadero. president obama ordered it to honor the victims in ♪ we were skipping stones and letting go ♪ ♪ over the river and down the road ♪ [ female announcer ] at nature valley, we know nature comes together in amazing ways. that's why we bring together natural ingredients, like dark chocolate with toasted oats, or sweet golden honey. perfect combinations of nature's delicious ingredients, from nature valley. ♪ ♪ i was thinking that i hope this never ends ♪ [ female announcer ] nature valley granola bars, nature at its most delicious. >> jack hanna's "wild countdown" is sponsored by nationwide insurance. >> hi, everybody. i'm jack hanna, coming to you from my base camp here at the columbus zoo. and welcome to "wild countdown." to meet the world's most remarkable animals-- it's just like watching a family, the big father sitting down there. sometimes i have to go to extremes. >> it's absolutely, incredibly gorgeous.